It's Just a Phase
This tells us the phase composition of a multiphase material.
What is a tie line/the lever rule?
This kind of defect occurs when an atom is missing in the crystal lattice.
What is a vacancy?
You should NEVER touch this with your bare hands.
What is hot metal?
Metal will heat up when you do this with a Dremel. (BE CAREFUL.)
What is polishing?
A microscopic mixture of at least two elements including at least one metal.
What is an Alloy? (Aluminum)
A phase region is identical in these two properties.
What are chemical and mechanical properties?
The region where two crystals meet each other.
What is a grain boundary?
The most important thing for the two people casting to do after wearing PPE.
What is communication?
This element of our mold alloys gases to escape, limiting porosity issues with our casts.
What are vents?
The thing which you should never ever buy because it's super flammable.
What is metal Powder? (Polonium)
Fixed ratio metal/metal-nonmetal compounds found on a phase diagram which are not solid solution phases.
What are intermetallics?
Larger grains contribute this property to a cast while smaller grains contribute this property to a cast. Grain size can be altered by doing this after casting. (3 parts.)
What is ductility?
What is strength?
What is heat treatment?
All of the PPE you need to wear when casting. (8 things, remember hair)
What are a flame retardant lab coat, long pants, closed toed shoes, fireproof spats, hair tied back, face shield, heat resistant gloves, and fireproof apron?
One casting partner uses a spoon to remove this from the top of the crucible.
What is dross?
A mechanical property which measures the ratio of applied stress to the resulting strain in the plastic regime.
What is Young's Modulus? (Molybdenum)
A phase change which happens to tin at roughly 56ºF.
What is tin leprosy?
This unit cell forms the distinct six-sided geometry that we see in quartz and is also prevalent for zinc, titanium, and magnesium.
What is a hexagonal close packed unit cell?
The colors on the NFPA diamond and their meanings.
What are red (flammability), yellow (instability), blue (health), and white (extra hazards)?
This practice minimizes metal-air mixing, which reduces negative effects like oxides, hydrogen embrittlement, and porosity.
What is a smooth pour?
The location on the phase diagram where two distinct solid phases and the liquid phase coexist.
What is the Eutectic point? (Europium)
The three most prevalent phases in our alloys.
What are alpha aluminum (ductility), eta zinc, and epsilon copper-zinc intermetallics (strength)?
This equipment is necessary to actually see defects in a metal crystal.
What is a scanning electron microscope?
This happens to water when we put it on a metal fire. (Think about chemical bonding and what the products do.)
What is water splits into H2 which rises and explodes and O2 which fuels the flame?
The solution to this problem is better mold clamping.
What is penetration?
The crystal unit cell for aluminum and copper crystals.
What is face centered Cubic? (Copper)